Jacquard mechanism for embroidering machines



Se t. 27 1927.

p M. HADAM JACQUARD MECHANISM FOR EMBROIDERING MACHINES Filed May 15,1925 H mg efyd y CMwnd shown.

Patented Sept. 27, 1927.

UNITED STATES 1,643,449 PATENT OFFIQE.

MAX HAIDAM, OF CEIEMNITZ, GERMANY, ASSIGNOR TO MASCHINENFABRIK KAPPEL,

A.G., OF CHEMNI'I'Z-KAPPEL, GERMANY.

JACQUARD MECHANISM FOR EMBROIDERING MACHINES.

Application filed May 15, 1925, Serial No. 30,580, and in Germany July9, 1924.

This invention relates to jacquard operated mechanism for braiding, netor lace making machines and the like, of the kind shown in US. Patent1,005,436 granted to Johann Jacob Knecht, October. 10, 1911 wherein thevarious motions of the needles as controlled by the jacquard mechanismare transmitted to planet wheel carriers which co-act with planet gearto cause axial displacements of endless screws, such displacementscontrolling the position of the embroidery frame. In such machines theplanet wheel carriers are at present caused to oscillate through theirrequired angles by means of complicated toothed mechanism, which isexpensive to produce, and which, when worn, causes irregularities in theextent of the oscillation of each separate planet wheel carrler.

The object of the present invention is to avoid these objections, andthis is effected by transmitting the motions of the needles asdetermined by the jacquard mechanism to the planet wheel carriers bymeans of lever pawls, and employing a stop-lever to hold each carrier inits exact position. The transmission of motion from the planet wheelcarriers to the embroidery frame is performed as at present.

'The invention is illustrated diagrammatically by way of example in theaccompanying drawings, in which for the sake of clearness, only onedrive for a planet wheel carrier as effected by the jacquard mechanismis In the drawings,

Figure 1 is a side view thereof.

Figure 2 is a front veiw of a series of planet wheel carriers and of theaccompanying pawl levers which effect their oscillations. The planetgear for the planet wheel carriers is not shown in detail since it isknown and furthermore the present invention is not concerned therewith.

In carrying the invention into effect, the

' known series of differential drives constituted by the planet gearssuch as shown in U. S. Patent No. 1,005,436, referred to above aremounted on a shaft 3,'which is supported in the side frames 12 of themachine. The planet wheel carriers 4 are in the form of discs, of whichseven are shown in Figure 2, arranged side by side on the shaft 3. Thediscs 4 are mounted loosely on the shaft 3 as in known practice butco-act with planet gear as before described to transmit motion to theembroidery frame. They receive their partial rotation selectivelyaccording to the pattern of the jacquard card. They have mounted on themengaging membersin the form ofpins or rollers 5, spaced apart at equaldistances. Beneath the differential shaft 3 and parallel therewith ismounted a shaft .6, on which are uloosely pivoted the levers 7. Theselevers are arranged one. pair at each slde of the machlne and therespective pairs are connected by spindles 8 and 9, on which there arealso loosely mounted the pawl levers 11 and on opposite sides of theaxis of oscillation 8 of the planet wheel carriers 4. By means of a cam12, shown in Figure l, a slide 13 is caused .to rise and fall in guides,and this slide is connected by rods 14 and 15 to the spindles 8 and 9respectively, the latter being thereby caused to rise and fall, pivotingabout the axis 6. The extreme end positions of the spindles 8 and 9 areindicated in Figure 1, in full and dotted lines. The distance between.their extremepositions exactly corresponds to the distance apart of thepins or rollers 5 on the planet wheel carrier discs 4. At a point to oneside of the mechanism described, and above the level of the shaft 3,there is supported a spindle16, on which stop-levers 17 are looselypivoted, one such lever being provided for each of the discs 4. Eachstop-lever 17 has a groove at its frceend adapted in the swinging of thelever to embrace one of the pins 5 of the planet wheel carrier, when theoscillating movement of the said carrier has been completed by theselected pawl lever 10 or 11, as hereafterodescribed. V I The pawllevers 11 have each a nose piece at their upper ends, which are adaptedto engage the inclined grooves 17 on the I lower side of the-stop-levers17 Y and raise them out of operative position priorto the commencementof the oscillating movement of the planet wheel carriers 4. I

The direction of oscillation of any given planet wheel carrier disc isdetermined by the jacquard card mechanism, which is illustrateddiagrammatically at the left hand 1 side of Figure 1. This mechanismselects the pawl lever 11 or the pawl lever 10 as the effectiveoperating member for the oscillation of the carrier, and therebydetermines whether the said carrier will oscillate in a clockwise or acounter-clockwise direction.

Thejacquard card 18 is fed over the bar 19, which is moved backwards andforwards in the known manner each advance of the.

perforation in the jacquard card, the said needle is undisturbed, but ifno perforation is on the card, the needle 20 is moved to the "rightlooking at Figure 1. The needles 20 are att-achcdto jacks 21 and 22,which have butt-s 23 and 24 adapted to cooperate or not, according tothe position of the perforations on the jacquard card '18 with thefeeler levers 28 and 29.

Loosely mounted on a spindle 25 there is a lever 26, which is adapted tobe oscillated in step with the rising and falling of the slide 13, bymeans of a connecting rod 30. The connecting rod has an elongated slot30 atits end, and the pin 26 'on the lever 26, which engages inthisslot, is held against the lower endthereof, by means of a spring 88. Thelever 26 carries a cross-spindle 39,

on which the three-armed lever 27 is mounted; On the horizontal arms 27--27 of this lever are pivoted the feeler levers 28 and 29 whichco-operate with the butts 23, 2-l'ofthe jacks 21, 22 as above mentioned;and tot-he vertical arm there is connected a link 83, which operates theend of the pawl levers 11 and 10, which are held apart, one on each sideof the centre ofoscillation 3 of the planet wheellcarrier' 4 at therequired dis tance, by means of a tie linlrE-St. The link 34: islofsuchlei'igth thatboth pawl levers 10 and 11 may be out of engagement atthe same time. The three-armed lever 27, by its articulation to the pairof pawl levers, is adapted to move these levers in unison transverselyto the axis of rotation of the planet wheel carriers, and therebytobring one or other of the pawl levers 10 or 11 into operativeposition.

Connected with the mechanism described there is a 111210111118 stop gearprovided; which may be of any convenient form, and is set in operationby the mechanism here described. In the form shown, the actuatingmechanism is illustrated as a Bowden wire mechanism and comprisescentral core wire 37, which; passes through the outer cable 36, which isfixed to some point on the rod 30. The core was 37 is fixed to somesuitable point of the lever 26, near to its free end. it

The method ofoperat'ion of the mechanism isas followsc p ,The jacquardcylinder 19 on its approach presses for example the needle 20; connectedto the jack 22, from left to right,.'looking at Figure 1, whereby thebutt 24 ismoved out of alignment with'the feeler lever 29. If the jack21 had beense'lecte'd', the butt 24 would have remained in alignmentwith the In this and synchronizes with the downward movement of thecross-spindle39, under the action of the lever 26. In this way thethreearmed lever 27 is tilted in a clockwise or counter-clockwisedirection, when the lever 26is moved downwardly. At the same time,

the slidel3 is at the upper end of its travel, and m the positionillustrated in Figure 1, the three-armed lever 27 has been tilted tomove the pawl lever 11 into engagement with oneof the pins 5 on the disct showmwhilst the pawl lever 10 is left free. During this engagingmovement of the lever 11, the nose slides along the inclined groove 1'7on the underside oflever' 17, therebyraisingthe said lever out ofengagement with thepin or roller 5, which it was embracing. The disc 4is thenfree to rotate.

When the slide 13 moves downwards, the disc 4 is rotated'through anangle corresponding to the distance apartof the pins or rollers 5. Atthe same time the connecting rod 30 has'moved the lever 26 upwards, sothat the arms 27 --27 of the three-armed 'pawl lever 11, whe11 inthedotted position lever"27 impinge against the fixed rails illustrated inFigure 1, is withdrawn from engagement with the pin or roller 5, and thestop-lever 17 thenengagespover the next pm on the disc. The disc hasthus been given a counter-clockwise movementthrou-gh' an angle ofdegrees in the form i'llustrat- I ed. It will be readily understood inthe event of the butt24 coming into operation, the rotation of the'discwould be through an angle: of 60 degrees in a clockwise direction.

If the jacquard card should be torn, or shon ld any mistake have beenmade in pen forating the card, both jacks 21 and 22 will remainundisturbed, and both butts 23 and 2a will register with the feeler1-ods 28 and 29. In thiscase the lever 26 willbe arrested before itcompletes its downward movement, and the continued downwardmovement ofthe connecting rod 30 will cause the spring 38 to stretch, andthe core87 of the Bowden Lriers co-acting with planet gear to actuate theembroldery frame; means for opera-tlng Lea-ch planet: wheel carrier,comprising, a air of pawl levers, members 011 the planet w eel carrieradapted to be engaged by one or other of the said pawl levers, means formoving one or other .of said pawl levers into engaging position, astop-lever and means for disengaging the stop-lever from the planetwheel carrier when the selected pawl lever is brought into engagementwith one of, the engaging-members of the planet wheel carrier.

2. In a lace machine planet wheel carrier, (as in claim 1) comprisingtwo lever pawls, located one on each side of the centre of oscillationof the planet wheel carrier. pins on the planet wheel carrier with whichone or other of said pawl levers engages to oscillate the planet wheelcarrier in one or other direction, jacquard actuated means for selectingwhich of the pawl levers is in engaging position, a stop-lever adaptedto on gage one of the pins on the planet wheel carrier, and means on thepawl levers for disengaging the said stop-lever as one or other of thepawl levers is placed in engaging position.

3. In a lace machine planet wheel carrier (as in claim 1) comprising twopawl levers located one on each side of the axis of oscillation of thecarrier, a link connecting said pawl levers and holding them at apredetermined distance apart, means for raising and lowering said pawllevers together, pins on the planet wheel carriers spaced apart at equaldistances and with which said pawl levers are adapted to engage, athree-armed lever articulated to said pawls to move them in unisontransversely to the axis of oscillation of the carriers to engage one orother of said pawl levers'with the pins on the carrier, feeler bars onthe said three-armed lever, jacquard-operated jacks co-operating withsaid feeler bars, an oscillating lever carrying said three-armed leverand moving said feeler bars into engagement with said jacquard operatedjacks, and a stop-lever for arresting the carrier in the position towhich it has been moved by the pawl lever.

4;. In a lace machine wherein the motions of needles actuated byjacquard card mechanism are transmitted to planet Wheel carriersco-acting with planet gear to actuate an embroidery frame, thecombination of side frames, a transverse shaft supported in said frames,planet wheel carriers grouped on said shaft, two pawl levers for eachplanet wheel carrier arranged one on each side of said shaft, 21 secondtransverse shaft, levers mounted on said second shaft at each endthereof, cross bars connecting said levers and on which said pawl leversare mounted, means for oscillating the levers on said second shaft, arod connecting said pawl levers to hold them apart at a predetermineddistance and jacquard-operated means for oscillating said pavvls inunison transversely to the axis of rotation of the planet wheel'carriersto select which of said pawl levers shall operate the said carrier,substantially as described.

In a lace machine wherein the motions of needles actuated by jacquardcard mechanism are transmitted to planet wheelcarriers co-acting withplanet gear to actuate an embroidery frame, jacquard operated mechanismfor selectively oscillating the planet wheel carriers in one or otherdirection, comprising two sets of slidable jacks havingdifferently-located butts thereon, a jacquard card mechanism operatingsaid jacks selectively, a three-armed lever, an oscillating levercarrying said three-armed lever, feeler. bars on two arms of said leveradapted on the oscillation of the carrying lever to co-operate with thebutts on said jacks which have not been operated by the jacquardmechanism, an actuating rod for said carrying lever, said actuating rodhav ing an elongated slot therein, a pin on the free end of the carryinglever engaging in the elongated slot, a spring holding said pin at oneend of said slot. a Bowden core wire fixed near the free end of thecarrying lever and a Bowden cable fixed to the actuati'ng rod for saidcarrying lever.

6. In a lace machine wherein the motions,

of needles actuated by jacquard card mecl1- anism are transmitted toplanet wheel car riers co-acting with planet gear to actuate anembroidery frame, jacquard-operated mechanism for selectivelyoscillating the planet wheel carriers in one or other direction,comprising two sets of slidable jacks having dilferently located buttsthereon, a jacquard card mechanism operating said jacks selectively, athree-armed lever, an oscillating lever carrying said three-armed lever,feeler bars on two arms of said lever adapted in the oscillation of thecarrying lever to c o-operate with the butts on said jacks which havenot been operated by the jacquard mechanism, an actuating rod for saidcarrying lever, said actuating rod having an elongated slot therein, apin on the free end of the carrying lever engaging in the elongatedslot, and machine-stopping mechanism operated by a movement of the saidpin along the elongated slot.

MAX HADAM.

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